HOWTO: How to Enable the Help Button on a Modal Property Sheet

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Step-by-Step Example

1. Derive a class from CPropertySheet.
2. Add an OnHelp handler for ID_HELP to the property sheet. For more information on how to add a handler, please see MFC Technical Note #6.
3. In the OnHelp handler, send a WM_COMMANDHELP message to the property sheet window by using SendMessage(WM_COMMANDHELP).
4. Implement the following code to provide the Help button with context-sensitive help functionality of the F1 function key:

      // Derive a class CMyPropertySheet from CPropertySheet.
      // Include the file afxpriv.h to obtain the id for
      // WM_COMMANDHELP in the implementation file for CMyPropertySheet
   
      #include "afxpriv.h"
   
      // add this handler in the implementation file for CMyPropertySheet
   
      void CMyPropertySheet::OnHelp( )
      {
           SendMessage(WM_COMMANDHELP);
      }